Radiator



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' RADIATOR Filed Aug. 27.1929

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n q rs' iid l/lL mm III 76 v Inventor FWNKCIfEi NOLDJ Attorney- Patented July 193.2

UNITED STATES PATENT- OFFICE FRANK C. REYNOLDS, OF NEW YORK, N. Y., ASSIGNORyIBY MRSNE ASSIGNMENTS, TO

AMERICAN RADIATOR & STANDARD SANITARY CORPORATION, A CORPORATION OF DELAWARE p RADIATOR Application filed August 27, 1929. Serial No. 388,655.

' particularly to radiators of the general type heat by shown inapplication No. 338,677, filed February 9,1929 byfThomas E. Murray. In radiators of the type shown in the above mentioned application, a pipe is bent or formed into a'number of substantially paral- .lel lengths to ser've as a conduit and container of the heating element. On this pipe there is mounted a pair of corrugated plates, one on each side of the plane in which the lengths of pipe lie, forming transverse ribs, which define alternate inner and outer channels for the passage of air transversely of the lengths of pipe.

An object of the present invention is to provide a radiator of the above type in which the lengths of pipe containing the heating fluid or medium are inclined to the horizontal snfliciently to cause a free flow of liquid and. to prevent the pocketing of air or other gas.

Another object of the invention is to provide a radiator of the above type in which the fins of adjacent orproximate lengths of pipe are separated so that there is no transfer of conduction from the fins of one length to those of another.

Other objects will be apparent from the description of theinvention from the follow; ing specification and claims.

- A further object of the invention is toprovide a simple andeconomical method of forming radiators of the above type.

The various features of the invention are illustrated in the; accompanying drawing.

' Fig. 1 is a side elevation of a radiator em- 6 bodying a preferred form of the invention;

Fig; 2 is an end elevation of the radiator shown in Fig; 1; Y

\ Fig. 3 is a planyiew of the radiator; V

Fig. 14 is a side elevation of a radiator in process of constructlon' accord ng 'to my in'ventlon.

In accordance with my invention, a pipe that is to serve as a container for the steam orother heating fluid-is bent-to form len hs a continuous path or conduit for the he'ating medium. The inlet and outlet ends of the pipeare provided with suitable collars or unions 15 and 16 to a supply pipe and an out-' let pipe or steam trap respectively, the inlet, connection 15 being ordinarily on theuppermost pipe 10. The lengths 10, 11 and 12 thus lie in a common plane.

A pair of corrugated lates 17 and 18 are mounted on opposite si es of the pipes 10, 11 and 12 and have areas19 and 20 that meet in the plane of the center lines of the pipes 10, 11 and12. Between the areas 19 and 20 the plates are provided with semicircular rounded areas 21 that fit the lengths of pipe 10 as described in the above mentioned Murray application. The plates '17 and 18 are welded together or otherwise secured at the adjoining areas 19 and 20 to form alternate inner and outer channels 22 and 23 for the passage of air upwardly and transversely to the pipe lengths 10, 11 and 12. The corrugated plates 17 and 18 thus joined to the pipes 10'12 also form heat conducting fins toconduct heat from the pipes 1012 to the air passing upwardly through the chan- 13, and the unjoined ends of the pipes 11 and 12, that is, the ends opposite the bend 14, are spread apart. thus giving a very gradual slope to the separate lengths, first from the inlet 15 tothe bend 13 then, in pipe 11 from the bend 13 to the bend 14 and finally-in length 12 to the outlet16. This spreading of the pipe lengths also separates the severed .ends of the corrugated plates 17 and 18,

spreading the cuts24. and 25 ofFig.v 4 at an angle as shown at 26 and 27 of Fig; 1. This separation of the sev'ered ends of" the -fins formedby thecor'rugated plates 17 and .18jhas the advantage of making the fins of the several pipe lengths 10, 11 and 12 thermal 1y independent of each other so that heat is not cenducted' from the fins of one pipe di rectly to the of the other and the tentperature of. the fins thereby lowered.

On the contrary, the temperature of the separated fins is retained at the high temperature imparted by the heating fluid except as it is lowered by the transfer of heat directa ly to the passing air currents. In this way the highest fpossible temperature gradient between the ns and the air passing through the channels or passages 22 and 23 is maintained even though one or more of the lengths 10, 11 or 12 might become pocketed or dead.

The se arated or spreaded ends of the 16 lengthso pipe may be held-in their spread position by any suitable means. In the preferred form of the invention this is accomplished by means of a pair of end plates 28 and 29 each of which is provided with an elongated slot 30 adapted to receive and fit the bend 13 or 14 and with a semi-circular notch 31 at one end toreceive and hold the length 10 or 12. The plates 28 and 29 are mounted at opposite ends of the radiator and bythe corrugated plates 17 -and 18 may be may be welded. or secured thereto in a suitable manner. -It will be understood that when more thanthree lengths of pipe are used a larger number of openings 30 or notches 31 will be provided in the spacing and holding plates.

It will be understood that the shape'and dimensions of the fins and channels formed varied and that other types of fins such as i a series of spaced plates or strips forming open channel fins at right angles to the pipes,

. j as illustrated in the pending application of Murrayand Hofi'er, Serial No. 193,173, filed May 21, 1927., may be used. a V

The corrugated plates 17 and 18 may be cut as indicated in Figs. 1 and 4, leaving one or more fins or. plates joined neanthebends 13 and 14 or, may be completely out leaving no thermal contact between the plates on one length of tube with those on another. Two or more radiators canbe joined together parallel to each other and may then'be cut or severed in accordance with the present invention.

Through the above invention there is,

therefore, provided a simple form of radiator and an economical method of manufactur ing it whereby a most eflicient and effective.

a transfer of heat from the steam pipe or other heat container to passing currents: of air is provided, and in which the prevention of air pockets is positively ensured.

WhatI claim is I Y 1..A radiator of the type described which comprises lengths of pipe joined at alternate ends and slightly inclined to the horizontal, and vertical fins on said lengths,-the fins of each length being separated from those of the lengths immediately above and'below it on flat intersecting planes being approximately in alignment with corresponding fins of the length immediatel' above and below.

2. A radiator o thetype described which comprises lengths of pipe joined at alternate ends and slightly inclined to the horizontal,

and vertical finson saiddengths the fins of each length being separated rom corre-- sponding fins of the length immediately above and below on'flat intersecting planes of separation corresponding to the relative inclination of proximate lengths of pipe.

3. A radiator of the type described which comprises lengths of pipe joined at alternate ends and slightly inclined to the horizontal,

vertical fins on said lengths, the fins of each length being separated on fiat planes of sepa: ration from, and approximately in alignment with, corresponding fins of the length immediately above and below and means to permanently and positively hold the un-,

joined ends of proximate lengths.

4. A radiator of the type described which comprises lengths of pipe joined. at alternate ends and slightly inclined to the horizontal, vertical fins on said lengths, the fins of each length being separated from, and approximately in alignment with, corresponding fins of the length immediately above and below and a dividing plate spanning and holding p1pe. 6. A radiator of the type described which comprises a length of pipe formed into lengths alternately inclined to, and joined-to proximate lengths at alternate ends,'and fins mounted on said lengths and transverselyv thereof and in approximate alignment and in the plane of said pipe, the ends of the fins of adjacent lengths being separated on lines separating proportionately to the inclination of said proximate lengths, said fins forming internal and external channels transverse to the lengths of said pipes. i

In' witness whereof, I have hereunto signed my name.

' FRANK C. REYNOLDS. 

